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БДС ISO 1762:2017

Paper, board and pulps — Determination of residue (ash) on ignition at 525 degrees C

Aug 17, 2017
95.99 Withdrawal of Standard   Nov 17, 2020

General information

95.99     Nov 17, 2020

BDS

ТК-73

International Standard

85.040  

Bulgarian  

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Scope

ISO/TS 1762:2015 describes the determination of the residue (ash) on ignition of paper, board and pulp at 525 °C. It is applicable to all types of paper, board, and pulp samples. The ash may consist of
a) mineral matter in the pulp and various residues from chemicals used in its manufacture,
b) metallic matter from piping and machinery, and
c) fillers, pigments, coatings, or residues from various additives.
In samples containing calcium carbonate, there is practically no decomposition of carbonate by ashing at 525 °C. Other fillers and pigments such as clay and titanium dioxide are also unaffected by ashing at 525 °C. Accordingly, the residue on ignition as determined by this International Standard provides a good estimate of the total inorganic matter in the sample, provided that the sample does not contain other minerals which decompose at or below this temperature. For example, magnesium carbonate and calcium sulfate may, at least partly, decompose at temperatures below 525 °C.

Life cycle

PREVIOUSLY

Replaces
БДС ISO 1762:2003

NOW

WITHDRAWN
БДС ISO 1762:2017
95.99 Withdrawal of Standard
Nov 17, 2020

REVISED BY

PUBLISHED
БДС ISO 1762:2020

Related project

Adopted from ISO 1762:2015

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